Allen-Bradley 1769-SDN, Installation Instructions Manual, Page: 37 / 68

Rockwell Automation Publication DNET-IN001B-EN-P - January 2012 37
Install a 1769 DeviceNet Communication Module Chapter 2
4.
On the module to be replaced and the right-side adjacent module (or end
cap if the module is the last module in the bank), move the bus levers to the
right (unlock) to disconnect the module from the adjacent modules.
5. Gently slide the disconnected module forward.
If you feel excessive resistance, be sure that you disconnected the module
from the bus and that you removed both mounting screws or opened the
DIN latches.
It may be necessary to rock the module slightly from front to back to
remove it. In a panel-mounted system, you might need to loosen the screws
of adjacent modules.
6.
Before installing the replacement module, be sure that the bus lever on the
right-side adjacent module is in the unlocked (fully right) position.
7.
Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus levers on the
replacement module and the right-side adjacent module or end cap.
9. Replace the mounting screws or snap the module onto the DIN rail.
10.
Replace the DeviceNet cable by attaching the connector to the module.
11. Restore configuration by using RSNetWorx for DeviceNet software.
IMPORTANT
Be sure that the new module has the same node address and
communication rate as the module that was replaced.